Bumper for railway-cars.



WM. @7W 49207 ff W. H. MINER.

BUMPER FOR RAILWAY CARS. APPLICATIoN mw www. lem.

Patented Jan. 7, 1919.

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i Specification of Letters Patent.` Patented Jari. 7,1919,

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To all whom z'mczy concern:

Be it known that I,`WILLmMl-l, MINER, a citizen of the United States, residing at Chazy, in the county of Clinton and State of New York, `have inventedacertainnew.

and useful Improvement in Bumpers for Railway-Cars, of which the following isa full, clear, concise, and exact description, reference being 1 had to the .accompanying drawings, forming a part of` this specifica"- tion.

My invention relates to improvements `in bumpers for railway cars.

, The object of my invention is toprovide a high capacity and efficient bumper `especially adapted to be associated with a bumping post. o

In the drawings forming a part of this specification, Figure 1 is a vertical longitudinal section of a bumping post with the shock absorbing mechanism mounted therein and embodying my invention; Fig. g2 isa cross section taken online 2-2 of Fig. 1;`

Fig. 3 is a cross section taken on line 3 3 ofFig. 1; and Figs. Lland 5 are longitudinal, vertical, central sections of the buffer device proper shown in Figl. Fig. 4 showinfr the position of the elements under full reease, and Fig. 5 the position assumed` at the end of the compressive stroke.`

Referring tothe drawings, the numeral 10 indicatesa railroad tie, 11 the ends of `a rail associated therewith, formingthe end of a railroad track at which is mounted the bumping post 12 formed of `suitalole"`ma`terial, as for instance, concrete,as illustrated in the drawings, suitably reinforcedby the steel members 13. `In said bumpingpost, a forwardly opening pocket'14 is provided `to receive the shock4 absorbing mechanism 15. The said mechanism comprises an outer casing 16, preferably cylindrical in form, and comprising the two sections 17 and 18 provided at their meeting edges with the `flanges 19, suitably secured together by the bolts 20. Within said casing16 is mounted a sliding shell 21 provided at its forward end with the out-turned flange 22 forming aseatfor the forward ends of the springs S23` which are annularly arranged aboutthe sliding shell 21 and between it and the casing 16;` `At their inner ends the springs 23 are seated against wedge blocks 24 which with the friction shoes 25 form friction mechanism adapted with the springs to resist the inward movement of the sliding casing `21;` The `said friction shoes are each provided with afriction face 26 engaging the adjacent frictionfface 27 of a wedge24, and at their opposed ends thesaid `friction shoes are provided withthefriction faces 127 adapted to engage against the wedge friction face 28 with which the `outer casing is `provided near its inner end. Theouter casing 16 is provided with an inner end wall 29 permitting the passage of a tool or suitable bar. A perforation 31 is extended throughthe bumper postterminatinp,` `at the said wall 29 to permittheinsertion of `.a suitable tool, as for instance, a bar with which the casing 16 and the contained parts can beI driven from the pocket 14 `iii the bumper post should it be found desirable to remove the same. Within the' sliding casing 21 is mounted a primary compression resisting `member com-. prisiiig a shell 33 `containing the springs 34 intermediate its ends, the springs being associatedat either `end with a set of friction elements 35, the said friction elements comprising shoes 36 adapted to engage the friction surfaces 37 of the shell and a wedge 38, anti-friction rollers 39 being mounted between the wedging faces 404-40 of the wedge and the 1adjacent wedging faces `of the shoes.

p "At its forward end the primary compression resisting member is provided with a Acap or bumper block 42 against which the couplerof an approaching car is adapted to l engage, and at its inner end with asimilar cap 43 which is adapted to engage against the beding head 44 upon suitable inward sisting members hereinbefore described as mounted betweenthesliding shell 21 and the outer casing 16.

` Upon the `approachof a car, the coupler,

projecting from its end engages against the cap or bumper block 42, driving the primary `compressim resisting member rearwardly, the" primary compression resisting member carrying with it Von inward movenear its `rear enc with the hangs 47 against whichtherear outstanding flange or* collar p 48 of f theshell* of *the primary compression "movement of the sliding shell and the com- `pressionlof the secondary compression `reresisting member abuts. By reason of this engagement of the primary compression resisting member with the sliding shell, the sliding 'shell is moved rearwardly, its rearward movement being resisted by the springs 23 and the frictional resistance ofV the friction members against whichthe said springs are seated at their rearward ends. Upon suitable inward movement, the resistance afforded by the secondary compression resisting members is augmented byfthat of the primary compression resisting members when the inner. cap 43 engages against the member 44 at therear end of the, outer .casing 16, as shown in Eig. 5,. The combined resistance of these parts in a device of sultable size may be made to exceed 1,500,000 recede- Although l have. herein ehewn end, described what I4 now consider the preferred embodiment of the invention, the same-1s merely illustrative, and, I contemplate all changesy andr modifications that. come within the scope ofthe claims, appended hereto. I claim:

1..'In a bumper, the combination wlth a fixed abutment, of primary and secondary shock absorbing mechanisms supported by said abutment, the.primary shock absorbing mechanism being bodily movable, said secelidery Sheet ebeerbiee meeheelem meltdins e plurality efenrinee interposed between said abutment and p .utQIllSvV o theprimary shock absorbing mechanism.

V a bumper, the combination with a fixed abutment, ofl a primary friction shock absorbing mechanism anda secondary friction shock absorbing mechanism both sup,- ported by said abutment, they primary shock absorbing mechanism being adapted to actuate the secondary shock absorbing mechanism, said secondary shock absorbing. mechanism being disposed around, the` periphery of the primary shock absorbing mechanism. 3. In a device ofthe character described, the combinationwith: a double ended friction primaryr shock absorbing mechanism, said mechanism being bodilyI movable,v of means for supporting Seid shock absorbing mechanism, and additional shock-absorbing mechanism interposed between said means land said friction shock absorbing-'mechanism.

4. In adevice, of the-character. described, the. combination with` an abutment, of a shock absorbingmechanism, av movable casing within-which said mechanism isl carried, a fixed shell carried by abutment, and friction-1v elementst i-,nterymsedll between said shell and` said; casing and cooperable. with both to? thereby cushion movements, of said ,Casing and the shackl abserbng mechanism carried therebyl f 5;- In a device efe.theycharac;.terJ described, the combination with anY abutment, of a shock absorbing mechanism, a movable casing within which said mechanism is carried, said casing comprising a plurality of independent segments, a fixed shell, and friction elements interposed between said shell and said casing adapted to cushion movement of said casing and the mechanism carried thereby.

6. In a device of the character described, the combination with `an abutment, of a friction shock absorbing mechanism including a friction shell, a movable casing within which said friction shell is carried, coperating engaging shoulders on said shell and casing, an outer fixed shell, and means interposed between said outer shell and said casing adapted to cushion movements of the latter and the friction shell carried within the Gesine 7. In a device of the character described, the combination with an abutment, of a double ended friction primary shock absorbing mechanism including a friction shell, a casing within which said friction shell is carried, said casing being movable, a fixed outer shell, and cushioning means interposed between said outer shell and said casing.

8.k In a device of the character described, the combination with an abutment, a fixed shell carried by said abutment, said shell being open at one end, of a casing mounted within said shell, said casing being bodily movable and comprising a plurality of independent elements, shock absorbing means interposed between said casing and said fixed shell to cushion the movements of said casing, and additional shock absorbing means carried by and bodily movable with said casing.`

9. In a device of the character described, the combination with an abutment, of a fixed shell carried by said abutment, a casing comprising a plurality of independent segments mounted within said shell, friction elementsv interposed between said casing and said shell to thereby cushion the movements of said casing, and a friction shock absorbing mechanism carried by said casing and adapted to actuate the latter.

10. In a device of the character described, the combination with a fixed abutment, of a fixed cylindrical shell mounted within said abutment, a collapsible cylindrical casing slidably mounted within said. shell, a circularly arranged series. of friction shoes and wedges coperable with said casing and shell to. cushion movements of thefcasing within the shell, and shock absorbing mechanism carried withinl` and movable bodily with the casing. i

L1. In. a device.ofthecharacter described, the combination with a fixed abutment, of a fixed shell mounted' within said abutment, the., shell being-'open at its outer end and having wenig-ing surfaces at its inner end, of 130 a casing Comprising a plurality of segments slidably mounted Within said shell, a, circulariy arranged series of friction shoes and Wedges coperable With the outer surface of the casing and the inner surface and Wedging surfaces of the shell, springs interposed between some of said friction elements and the casing, a double ended friction shell mounted Within and movable in unison With said easing, friction elements coperable 10 have hereunto subscribed my name this 15th 15 day of May, 1917.

WILLIAM H. MINER.

opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

